What question did this study set out to answer?

This research aims to assess the reproducibility of linear cardiac output measurement using Doppler ultrasound in both artificial and real circulation settings.

January 1, 1986HeartOpen Access

Reproducibility of linear cardiac output measurement by Doppler ultrasound alone.

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Authors

FMF M McLennanAberdeen Royal Infirmary NHN E HaitesUniversity of Aberdeen JMJ D MackenzieUniversity of Aberdeen

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Implication

Randomized trial demonstrates reproducibility of cardiac output measurement in patients, indicating reliable non-invasive methods.

Key Points

This research aims to assess the reproducibility of linear cardiac output measurement using Doppler ultrasound in both artificial and real circulation settings.
Artificial circulation with a pig aorta was used to correlate measured distance and absolute blood flow.
In 142 patients, duplicate measurements of minute distance were obtained by repositioning the ultrasound transducer.
Correlation coefficients and prediction standard errors were calculated to assess accuracy.
The correlation coefficient for the artificial setup was 0.99, with a standard error of 5.4%.
95% confidence limits indicated a range of flow rates that could yield similar measurements.
Mean differences in paired readings from patients were 5.4%, showing high reproducibility.

Cite This Study

McLennan et al. (1986) studied this question.

synapsesocial.com/papers/6a1b60bf947c651ddaabcf42 https://doi.org/10.1136/hrt.55.1.25

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Reproducibility of linear cardiac output measurement by Doppler ultrasound alone.

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Implication

Key Points

Cite This Study

Reproducibility of linear cardiac output measurement by Doppler ultrasound alone.

Discussion

Member takes

Implication

Key Points

Cite This Study

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